Extreme-Weather-Chart-Key

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Projected Impacts By Sector
Projected Change
Agriculture,
Forestry
Water Resources
Human
Health/Mortality
Industry/Settlement/Society
Warmer/fewer cold days
and nights; warmer/more
hot days and nights over
most land areas
Increased yields in
colder
environments;
decreased yields in
warmer
environments
Reduced yields in
warmer regions due
to heat stress at key
devel. stages; fire
danger increase
Effects on water
resources relying on
snow melt
Reduced human
mortality from
decreased cold
exposure
Reduced energy demand for
heating; increased demand for
cooling; declining air quality in
cities; reduced effects of snow, ice
etc.
Increased water
demand; water quality
problems, e.g., algal
blooms
Increased risk of heatrelated mortality
Damage to crops;
soil erosion,
inability to
cultivate land,
water logging of
soils
Land degradation,
lower yields/crop
damage and failure;
livestock deaths;
land degradation
Damage to crops;
windthrow of trees
Adverse effects on
quality of surface and
groundwater;
contamination of
water supply
Deaths, injuries,
infectious diseases,
allergies and dermatitis
from floods and
landslides
Reduction in quality of life for
people in warm areas without air
conditioning; impacts on elderly
and very young; reduced
thermoelectric power production
efficiency
Disruption of settlements,
commerce, transport and societies
due to flooding; pressures on urban
and rural infrastructures
More widespread
water stress
Salinization of
irrigation and well
water
Decreased freshwater
availability due to
saltwater intrusion
Increased risk of food
and water shortage and
wild fires; increased
risk of water- and foodborne diseases
Increased risk of
deaths, injuries, waterand food-borne
diseases
Increase in deaths by
drowning in floods;
increase in stressrelated disease
Increase in the frequency of
warm spells/heat waves
over most land areas
Increase in the frequency of
heavy precipitation events
over most land areas
Increase in the area affected
by drought
Increase in the number of
intense tropical cyclones
Increase in the incidence of
extreme high sea level
Power outages cause
disruption of public
water supply
Water shortages for settlements,
industry and societies; reduced
hydropower generation potentials;
potentials for population migration
Disruption by flood and high
winds; withdrawal of risk coverage
in vulnerable areas by private
insurers
Costs of coastal protection versus
costs of land-use relocation; also
see tropical cyclones above
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